[PATCH 4/5] sound: update snd_assert macro

[Steven Rostedt <rostedt@goodmis.org>]

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One user of the snd_assert macro calls a goto and the compiler
complains that the label is not used when the snd_assert is
not set.

This patch makes snd_assert more robust when not defined to
let the compiler know about arguments when not in use.

CC: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
---
 include/sound/core.h |    8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

Index: linux-compile.git/include/sound/core.h
===================================================================
--- linux-compile.git.orig/include/sound/core.h	2008-07-27 09:26:33.000000000 -0400
+++ linux-compile.git/include/sound/core.h	2008-10-02 10:00:57.000000000 -0400
@@ -407,7 +407,13 @@ void snd_verbose_printd(const char *file
 #else /* !CONFIG_SND_DEBUG */
 
 #define snd_printd(fmt, args...)	/* nothing */
-#define snd_assert(expr, args...)	(void)(expr)
+/* Keep the compiler happy by showing the expr and args */
+#define snd_assert(expr, args...)	do {	\
+	if (0) {				\
+		(void)(expr);			\
+		args;				\
+	}					\
+} while(0)
 #define snd_BUG()			/* nothing */
 
 #endif /* CONFIG_SND_DEBUG */

--